Commutator soldering iron



H. A. HANDS COMMUTATOR SOLDERING IRON April 14, 1925.

Fild Sept. 1 1922 Pig.5.

m4 E :w a v m. 1 .HH. .m w at u INVENTOR Howard A. Hands WITNESSES:

TToNEY' mud ,State .ot Perms Patented Apr. 14, 1925.

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,a ncatinn led set r -M lie it huo vn that I, Ho vnnn A IfLuvns, a (:Tit'iven soft the .llnlited States, and .121 ,re dent ojt W'iiljhinsluireg "in the .county of l-ll legheniy Rania, have invented new and useful *I provement in Continutater vSrilcleriiag lax-ms, oft ivhliclrthze following is a specification.

M invention relates to electricail'lydieated devices and, pzuzt icularly, ,to electricallyheated soldering irons.

The ect of lily invention fisjto provide a relatively simple, .compact rand ri-igged structure for ,an relectrically heated commutator soldering iron.

In pract cing my invei-ition, I provide a central metallic core member located nithin a hollow metallic casing: all of the outer longitudinal surfaces of filiicli are =01": .ar- .cuate it'orm in lateral section. A plurality rot refractory .LesistOr-supporting members are located between the central core the inner wall of the casing and support a suitable re: stor member. End ,piliates.,ilia=vill g ,a contour substantially similar to that Gillie casing, are provided at the ends of the core .an d the casing and are suitably secured thereagaiinst- Mfians are provided [for Vsuspendingthe soldering iron from in suitable supporting means.

In the single sheet .of .dnaivingls,

F igure 1 is a top plan yieiv 01". .a device embodying my inuention;

Fig. 2 view in lateral, section thereof taken on theline IIII of Fig. '3

Fig. 3 is a view in longitudinal section thereof taken on the line IIIIII of Fig.

Fig. 4: is a view, in side elevation, of a refractory resistor supporting member, and

Fig. 5 is a top plan view thereof.

A soldering iron. designatei'l general] y by the numeral 11, comprises a cei'ltral metal core member 12, which may be substantially square in cross-section. An outer metallic casing 13 is located around the central core 12 and has an internal chamber 14 of such dimensions as to leave a substantial space between the central core and the inner Wall of the casing. The outer metal casing is substantially co-extensive with the inner central core. The outer longitudinal surfaces of the casing 13 may be of any desired shape in lateral section in order that the surfaces iQQMMW MQm sewn-arm an mi- A ,n'ray .l .21( l;il ptQCl .to icmopieitate with. an d close lly a relatively large area of arcuate rich is to be soldered. As .illus itrated in i es. 1 and 2 of the drawin g two \ot itlie dour surfaces .may be substantially plane and the tl\.Q1.UYO .1111 av 119 .a rcuate .and may have .d'gtl'erent ,radi'i This peninits of .e n-ployi t ie soldering iron with predetermined .diameter of commutator and. irgttlae outer surfaces of the casing are made con .vex, the iron may be employed .to solder .a plurality of iconinnutator necks simultaneously.

l-ir pluraliitv of elongated and nelatiuely narrow :QTl QCZtlJl-C{LlillllSLlLQl-iifijl 11G tractor-y in embers 15 are provided in the space between theeentral core 12 .andithe inner wall-otthe casing Eaclrot the ;;me1nbers is pro vided with a plurality otundencut rand ,la-terally-extending grooves 116 to permit lot suppontiugither-ein a suitable resistor me ilaer 17 which is here "illustrated comnrising a helicailly-wound resistor member. The ends of the resistor member 17 naay lbe ibroirght vout through an opening 1-8 one (of the malls of the casing 13., a tube 19m". suit- ;able insnlati-n r material being employed as a for the-opening 18. A plate .21 of suitable insulating material may isuppont .a control SWitCl-I 22 mounted thereon to which the ends of the resistor inem ber 17 and the iends of .a suitable .s lYvC'lliCil-lli} conductor (not shown) are connected.

At each end int {the casing -13 and 0f the central core 12 .s prosaic. d an end plate .23 having subs-ta tially the same cantor-1r as the Each of the end plates may be suitably secured against the casing 13 by a plurality of screws 24. Eye bolts may be employed to secure the central portion or. the end plates against the central core 12 and may also serve as means For securing to the Solderingiron a plurality oil? ropes or chains by which the iron may be suspended above a commutator to be soldered.

In order to resiliently support the resistor-supporting members 15 in their proper operative positions Within the easing 13, I provide a layer 26 of a suitable heat-insulating material, such as asbestos, between the ends of the members 15 and the inner adjacent surface of the respective end plates 23. The device embodying my invention may be supported, as hereinbefore stated, by any suitable means which will permit of bringing one of the convex arcuate surfaces against a plurality of commutator segments or commutator necks and allowed to remain in operative and heatconducting engagement therewith until the proper soldering operation has been efl'ected, in a wellknown manner in the art. The length of the device may be made any predetermined or desired amount and may be made somewhat longer than the length of the surface which it is desired to solder in order that not only that portion of the surface which is to be actually soldered but also those portions immediately adjacent thereto may be heated in order to effect a proper soldering operation which, as is well known, requires that the parts be heated to a relatively high temperature. The device embodying my invention may be provided with any desired number of ex ternal surfaces which may be given any desired degree of curvature to permit of employing the same iron with a relatively large number of different sizes of commutators or of surfaces having diiferent degrees of curvature.

Various modifications may be made in the device embodying my invention without departing from the. spirit and scope thereof, and I desire, therefore, that only such limitations shall be placed thereon as are imposed by the prior art or are specifically set forth in the appended claims.

I claim as my invention 1. A soldering iron comprising a central metal core, a metal casing spaced from and surrounding said central core and having a convex soldering face on its outer surface, a plurality of relatively narrow, elongated, grooved refractory lGSlSiJOf-SLIPPOItiDg members located adjacent to said central core, and a resistor member located in said resistor-supporting members.

2. A soldering iron comprising a central metal core, an open-end metal casing spaced from and surrounding said central core and having a plurality of soldering faces on its longitudinal surface, a plurality of relatively narrow, elongated, refractory resistor-supporting members substantially coextensive with, and located adjacent to, the

longitudinal surface of the central core, a resistor member in said resistor-supporting members, and a plurality of metal end plates for enclosing the open-end metal casing and for providing a heat path from said central core to said casing.

3. In a soldering iron, in combination, an open-end metal casing having a soldering face on its outer surface, a central metal core located within said casing, an electricheating element located between said core and said casing, and a plurality of metal end plates for enclosing the open ends of said casing and for providing a heat path from said central core to said casing.

4. In a soldering iron, in combination, an open-end metal casing having a plurality of soldering faces, of arcuate form, on its outer surface, a central metal core within said casing and spaced therefrom, an electric heating element located between said core and said casing, and metal end plates for enclosing the open ends of said casing and for providing a heat path from said core to said casing.

5. In a soldering iron, in combination, an open-end metal casing having a plurality of soldering faces, of arcuate form and of different radii, on its outer surface, a central metal core within said casing and spaced therefrom, an electric heating element between said core and easing, metal end plates for enclosing the open ends of said casing and for providing a heat path from said core to said casing, and means for holding said. central core in proper operative position relatively to said casing and for permitting of suspending said iron in operative position.

In testimony whereof, I have hereunto subscribed my name this 12th day of September 1922.

HOWARD A. HANDS. 

